OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-f915eb-0): addr:8e:67:76:ce:2f:3f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-676849-0): addr:5a:20:bf:69:80:f6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:5a:6a:fb:5b:63:31
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
